Re: [PATCH v7 05/18] drm/mediatek: Set DRM mode configs accordingly

From: CK Hu (胡俊光)
Date: Thu May 02 2024 - 22:39:07 EST


Hi, Shawn:

On Thu, 2024-05-02 at 18:38 +0800, Shawn Sung wrote:
> From: Hsiao Chien Sung <shawn.sung@xxxxxxxxxxxx>
>
> Set DRM mode configs limitation according to the hardware
> capabilities
> and pass the IGT checks as below:
>
> - The test "graphics.IgtKms.kms_plane" requires a frame buffer with
> width of 4512 pixels (> 4096).
> - The test "graphics.IgtKms.kms_cursor_crc" checks if the cursor size
> is
> defined, and run the test with cursor size from 1x1 to 512x512.
>
> Please notice that the test conditions may change as IGT is updated.

Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>

>
> Signed-off-by: Hsiao Chien Sung <shawn.sung@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 22 ++++++++++++++++++++++
> drivers/gpu/drm/mediatek/mtk_drm_drv.h | 4 ++++
> 2 files changed, 26 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index 8e047043202b4..c9cad3a827376 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -294,6 +294,9 @@ static const struct mtk_mmsys_driver_data
> mt8188_vdosys0_driver_data = {
> .conn_routes = mt8188_mtk_ddp_main_routes,
> .num_conn_routes = ARRAY_SIZE(mt8188_mtk_ddp_main_routes),
> .mmsys_dev_num = 2,
> + .max_width = 8191,
> + .min_width = 1,
> + .min_height = 1,
> };
>
> static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data =
> {
> @@ -308,6 +311,9 @@ static const struct mtk_mmsys_driver_data
> mt8195_vdosys0_driver_data = {
> .main_path = mt8195_mtk_ddp_main,
> .main_len = ARRAY_SIZE(mt8195_mtk_ddp_main),
> .mmsys_dev_num = 2,
> + .max_width = 8191,
> + .min_width = 1,
> + .min_height = 1,
> };
>
> static const struct mtk_mmsys_driver_data mt8195_vdosys1_driver_data
> = {
> @@ -315,6 +321,9 @@ static const struct mtk_mmsys_driver_data
> mt8195_vdosys1_driver_data = {
> .ext_len = ARRAY_SIZE(mt8195_mtk_ddp_ext),
> .mmsys_id = 1,
> .mmsys_dev_num = 2,
> + .max_width = 8191,
> + .min_width = 2, /* 2-pixel align when ethdr is bypassed */
> + .min_height = 1,
> };
>
> static const struct of_device_id mtk_drm_of_ids[] = {
> @@ -493,6 +502,15 @@ static int mtk_drm_kms_init(struct drm_device
> *drm)
> for (j = 0; j < private->data->mmsys_dev_num; j++) {
> priv_n = private->all_drm_private[j];
>
> + if (priv_n->data->max_width)
> + drm->mode_config.max_width = priv_n-
> >data->max_width;
> +
> + if (priv_n->data->min_width)
> + drm->mode_config.min_width = priv_n-
> >data->min_width;
> +
> + if (priv_n->data->min_height)
> + drm->mode_config.min_height = priv_n-
> >data->min_height;
> +
> if (i == CRTC_MAIN && priv_n->data->main_len) {
> ret = mtk_crtc_create(drm, priv_n-
> >data->main_path,
> priv_n->data-
> >main_len, j,
> @@ -520,6 +538,10 @@ static int mtk_drm_kms_init(struct drm_device
> *drm)
> }
> }
>
> + /* IGT will check if the cursor size is configured */
> + drm->mode_config.cursor_width = drm->mode_config.max_width;
> + drm->mode_config.cursor_height = drm->mode_config.max_height;
> +
> /* Use OVL device for all DMA memory allocations */
> crtc = drm_crtc_from_index(drm, 0);
> if (crtc)
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> index 78d698ede1bf8..6cfa790e8df5c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> @@ -46,6 +46,10 @@ struct mtk_mmsys_driver_data {
> bool shadow_register;
> unsigned int mmsys_id;
> unsigned int mmsys_dev_num;
> +
> + int max_width;
> + int min_width;
> + int min_height;
> };
>
> struct mtk_drm_private {